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l J. AsHGR0PT.

TILE BOB GLASS AND OTHER FURNAGES. No. 311,055. Patented Jan. 20, 1885.

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JOHN ASHOROFT, OF NFV YORK, N. Y.

TILE FOR GLASS AND OTHER FURNACES.

SPECIFICATION forming part of Letters Patent No. 311,055, dated January 20, 1885.

Application filed December l2, lzSl4 (No mrde.)

To all whom it may concern:

Be it known that I, JOHN Asncnorr, a citizen of the United States, residing at ANew York, inthe county of New York audState of New York, have invented certain new and useful Improvements in Tiles for Glass and other Furnaces, of which the following is a specification, reference being had therein to the accompanying drawings.

My invention relates to improvements in hollow perforated tiles for use in glass and other furnaces for burning natural or artificial 0fas. b The object of my invention 'is to provide a tile, of fire-proof material, having internal ducts for the admission of air and gas and external perforations for the distribution in the combustion-chamber.

My invention consists of a tile made in one or more sections, having longitudinal and parallel cavities for the passage of gas and air thereinto, and a series of perforations or pas sages leading from the air into the gas-chambers, and perforations extending from the gas ducts or cavities to the exterior of the tile, whereby the gas and air are mixed before they enter the combustion-chamber.

My invention consists, further, in making the air-passages of the tile larger than the gaspassages, whereby the proper proportion of air can be admitted and mingled with the gas to insure complete combustion.

. Figure l is a view in perspective of my improved tile. Fig. 2 is a longitudinal sectional view of a tile used at the front end of the furnace, on the line :c x of Fig. l. Fig. 3 is a similar view of a tile used at the rear end of the furnace, having one end closed. Fig. et is a sectional end view taken on the line y y of Fig. l. Fig. 5 is a longitudinal sectional view of a tile made in two sections-one for air and one for gas-placed together as used in the furnace.

A indicates a tile made of fire-clay or other suitable fire- :resisting material, and is pro vided with a series of longitudinal parallel ducts or passages, B and G, the former for the admission and passage of air and the latter for the adlnission of gas. The air ducts or passages B are made larger than the gas-ducts O, so `that the proper or requisite amount oi' air may be mingled'with the gas to insure a complete combustion of the same. The air ducts or passages B communicate with the gas-ducts by means of the openings or pasd sages a, while the gas ducts or passages O communicate with the combustion-chamber of the furnace through the ducts or openings b, so that the air and gas are mingled in proper proportions before entering the combustionchamber.

l have shown the gas and air ducts a b as leading up from the horizontal ducts or passages at an angle, so that the gas and air will not be obstructed by sharp angles, but will be free to rise into the combustion'chamber. I do not wish, however, to limit myself inthis particular, as it is obvious that vertical ducts, or ducts leading at right angles from the main air and gas passages, are embraced within the spirit of my invention.

The tiles A may be made in one block, with the gas and air passages therein, in the usual manner of making fire-proof tiles for building purposes, and the ducts a I) formed therein afterward, either before or after the tiles are burned in the kiln; or, as shown in Fig. 5, they may be made in separate sections and joined together in the furnace. The front end of the tiles are provided with openings c d, preferably round, to admit of the gas and air nozzles being introduced therein, while the rear ends of the tile are closed up, as shown in Fig. 3.

rlhe tiles may be made in one piece, having the openings at one end and the other end closed, as already indicated, or they may be made in shorter sections and cemented together at their ends with any suitable fire-proof cement.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is-

l. As a new article of manufacture, a nreproof tile for feeding gas and air to glass and other furnaces, provided with longitudinal ducts for the passage of gas and similar ducts for the introduction of air, both sets of ducts or passages being connected with inclined or the proper amount of air is mingled with the Vertical duets which open out through the faoe gas beforev it passes out of the tile or into the of the tile, as set forth. combustion-chamber.

2. A fire-proof tile for feeding gas and air In testimony whereof I afx my signature in 5 to glass and other furnaces7 provided with lonpresence of two witnesses.

gitudinal passages for the admission of gas,

which communicate with the exterior of the JOHN ASHCROFT' tile by suitable duets, and a larger passage for Vitnesses: the admission of air, both passages being oon- SAMUEL P. BELL,

ro neeted by suitable duets, as set forth, whereby A. C. FRIsBIE. 

